Link read, Plc block transfer instruction data, Message operation – Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual

Page 176: Continuous parameter link read

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7–30

Publication 1336 FORCE–5.13 –– September, 1998

The Continuous Parameter Link Read message returns a list of up to
60 parameters that are linked to each drive parameter in a
consecutive list.

PLC Block Transfer Instruction Data

BTW instruction length:

4 words

BTR instruction length:

5-64 words

Message Length

4

Header

Word 1

Header

Word 1

PLC Decimal Value

4

Header

Word 2

Header

Word 2

PLC Decimal Value

4 –– Message OK

-327664 –– Message Error

0

Data

Word 5

Number of Parameter

Links to Read

Data

Word 3

Starting Parameter

Number

Data

Word 4

Number of Parameter

Links to Read

Data

Word 3

Starting Parameter

Number

Data

Word 4

Data

Word 6

Data

Word

Message Structure

Data

Word

Data

Word

Data

Word 64

Source Parameter

Number 1

Source Parameter

Number 2

Source Parameter

Number 60

PLC Request –– Block Transfer Write

Drive Response –– Block Transfer Read

Message Operation

The request must specify the number of links to be read and the
starting sink parameter number. The response returns the parameter
number of the source that is linked to each sink parameter. The
response returns links for a consecutive list of sink parameters (up to
60 links). If a parameter is not linked, a value of 0 is returned.

Link Read

Continuous Parameter Link Read

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